just seeing if anybody corrects me
Trademark is generally industry specific, so you are probably technically correct. That may not be enough.
You can bet every Tupperware lawyer would be opposing that mark. You better have lots of money to spend years in court. Even when you’re in the right, you can still lose.
Could be considered damaging to the brand, which would probably be legally legitimate.
Also, it’s just about the size and shape of the machines basically and they’re in the same industries.
So is it really that different of an industry, or two sub-industries of like… plastics, in general?
I’d be more disappointed in the missed naming opportunity: Upperware